Borrowings (Schedule of Selected Information Regarding Repurchase Agreements) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Deposits [Abstract]
Maximum amount of outstanding agreements at any month end during the period	$ 154,404	$ 288,591	$ 133,552
Average amount outstanding during the period	$ 109,246	$ 197,726	$ 99,057
Weighted average interest rate for the period	0.14%	0.09%	0.13%